Date   

Re: PEC

Ray Gralak
 

Hi Joe,

I have found the scale changes “somewhat”, if I go through ALL the
calibration steps, on the flip side.
One possible reason for image scale changes could be "settling" of equipment after the pier flip.

Also, the accuracy of the calculated image scale depends on how accurately you click the start and ends of star trails, so there can be some variation. You can try zooming in first to click an endpoint. But, you don't want to click the very last pixels of a trail. The trail has a width and so at each end you want to pick a point 1/2 the trail width from the very ends of the trail.

It may account for my getting different PEC curve coefficients on
alternate pier sides.
I have seen this to in my 1200, but I don't think it has anything to do with image scale. It may have something to so with how the worm rides on the worm wheel on each side of the pier when there is a weight imbalance.

-Ray Gralak
Author of APCC (Astro-Physics Command Center): http://www.astro-physics.com/index.htm?products/accessories/software/apcc/apcc
Author of PEMPro: http://www.ccdware.com
Author of Astro-Physics V2 ASCOM Driver: http://www.gralak.com/apdriver
Author of PulseGuide: http://www.pulseguide.com
Author of Sigma: http://www.gralak.com/sigma


-----Original Message-----
From: ap-gto@yahoogroups.com [mailto:ap-gto@yahoogroups.com]
Sent: Saturday, August 20, 2016 9:05 AM
To: ap-gto@yahoogroups.com
Subject: Re: [ap-gto] Re: PEC



Ray,

To your point about calibration after a pier flip. I was thinking it would be better to
run calibration, but also just SKIP ahead to the step that the user selects the “hockey
stick” pattern, and changes it “diagonally” to the previous pier side’s calibration run,
selected one.

That way, the camera is not touched or adjusted, which would change the camera
angle from the original pier side calibration. I have found the scale changes
“somewhat”, if I go through ALL the calibration steps, on the flip side. It may account
for my getting different PEC curve coefficients on alternate pier sides.

Joe


Re: PEC

Ray Gralak
 

Hi Roland,

"but you may have to invert the PEC curve."

You NEVER have to invert the PEC curve.
After a pier flip, the camera will effectively be rotated 180 degrees. What was West on an image is now East, and vice versa.

So, if the user ran PEMPro's Calibration Wizard on one side of the pier, and then did a pier flip, PEMPro won't know that the camera was effectively rotated 180 degrees. To compensate for the camera rotation the user can invert the PEC curve before uploading to the mount, or rerun PEMPro's Calibration Wizard.

-Ray Gralak
Author of APCC (Astro-Physics Command Center): http://www.astro-physics.com/index.htm?products/accessories/software/apcc/apcc
Author of PEMPro: http://www.ccdware.com
Author of Astro-Physics V2 ASCOM Driver: http://www.gralak.com/apdriver
Author of PulseGuide: http://www.pulseguide.com
Author of Sigma: http://www.gralak.com/sigma


-----Original Message-----
From: ap-gto@yahoogroups.com [mailto:ap-gto@yahoogroups.com]
Sent: Saturday, August 20, 2016 9:56 AM
To: ap-gto@yahoogroups.com
Subject: Re: [ap-gto] Re: PEC



"but you may have to invert the PEC curve."

You NEVER have to invert the PEC curve. Calibration is not the same as producing a
PE curve and uploading it to your mount servo. Let's not confuse the two. Once you
have done a PE run and uploaded a PE curve to the mount, you should not have to
do this again for a couple of years. Calibration of your camera for autoguiding is a
whole other issue. There is no reason to do a PE curve willy nilly every time you set
up. That is just bonkers.

Another observation: after doing a PE run, you can retrieve the curve that was loaded
into your mount, and that will tell you whether or not you have done the run
successfully. It will look just like the curve that you generated and uploaded.

If, after turning PE on, you still get drift in RA, then you probably are not properly
polar aligned. However, even with perfect polar alignment, the RA axis will still drift
due to atmospheric refraction. The only place where the exact sidereal rate produces
no drift is at the zenith. Everywhere else the stars will drift slowly or rapidly depending
on how far from the horizon you are pointing. The only way to eliminate RA drift (and
Dec drift) is to model the sky and allow the model to modify the tracking rates.

Is it possible to determine if the RA drift is due to PE or to drift? Yes, but this requires
a bit of old fashioned experimentation. Drift is constant, PE is cyclical. You can see
the cyclical motion of PE by offsetting azimuth axis about 5 to 10 degrees and
recording star drift with your CCD camera for about 13 minutes. You will get two
worm cycles in your image, and you can then measure the amount of periodic error
by looking at the cyclical trail of any star in your image. Measuring the number of
pixel variation of the cycles will give you the amount of PE. If the star streaks are
basically straight, then there is little or no periodic error. Do this with PEM on and
PEM off to see the improvement.

Rolando


-----Original Message-----
From: 'Ray Gralak (Groups)' groups3@gralak.com [ap-gto] <ap-
gto@yahoogroups.com>
To: ap-gto <ap-gto@yahoogroups.com>
Sent: Sat, Aug 20, 2016 10:26 am
Subject: RE: [ap-gto] Re: PEC

Hi Larry,

I think I meant that considering nothing changes (like maybe in a permanent setup).
More accurately, you will usually need to do the calibration wizard once per night.
However, if you change equipment or camera orientation then you will need to
calibrate again. If you do a pier flip, you don't necessarily need to calibrate, but you
may have to invert the PEC curve.

-Ray Gralak
Author of APCC (Astro-Physics Command Center): http://www.astro-
physics.com/index.htm?products/accessories/software/apcc/apcc
Author of PEMPro: http://www.ccdware.com
Author of Astro-Physics V2 ASCOM Driver: http://www.gralak.com/apdriver
Author of PulseGuide: http://www.pulseguide.com
Author of Sigma: http://www.gralak.com/sigma


-----Original Message-----
From: ap-gto@yahoogroups.com [mailto:ap-gto@yahoogroups.com <mailto:ap-
gto@yahoogroups.com?> ]
Sent: Saturday, August 20, 2016 8:08 AM
To: ap-gto@yahoogroups.com
Subject: RE: [ap-gto] Re: PEC



Ray, excuse me for butting into this conversation. But the reference you made
about
the Calibration Wizard says you only need to do this once. Is this also true if I
remove the telescope/camera and later replace it on the mount (a refractor) and the
camera angle is slightly off from its previous position?

Larry



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Re: PEC

Roland Christen
 

"but you may have to invert the PEC curve."
 
You NEVER have to invert the PEC curve. Calibration is not the same as producing a PE curve and uploading it to your mount servo. Let's not confuse the two. Once you have done a PE run and uploaded a PE curve to the mount, you should not have to do this again for a couple of years. Calibration of your camera for autoguiding is a whole other issue. There is no reason to do a PE curve willy nilly every time you set up. That is just bonkers.
 
Another observation: after doing a PE run, you can retrieve the curve that was loaded into your mount, and that will tell you whether or not you have done the run successfully. It will look just like the curve that you generated and uploaded.
 
If, after turning PE on, you still get drift in RA, then you probably are not properly polar aligned. However, even with perfect polar alignment, the RA axis will still drift due to atmospheric refraction. The only place where the exact sidereal rate produces no drift is at the zenith. Everywhere else the stars will drift slowly or rapidly depending on how far from the horizon you are pointing. The only way to eliminate RA drift (and Dec drift) is to model the sky and allow the model to modify the tracking rates.
 
Is it possible to determine if the RA drift is due to PE or to drift? Yes, but this requires a bit of old fashioned experimentation. Drift is constant, PE is cyclical. You can see the cyclical motion of PE by offsetting azimuth axis about 5 to 10 degrees and recording star drift with your CCD camera for about 13 minutes. You will get two worm cycles in your image, and you can then measure the amount of periodic error by looking at the cyclical trail of any star in your image. Measuring the number of pixel variation of the cycles will give you the amount of PE. If the star streaks are basically straight, then there is little or no periodic error. Do this with PEM on and PEM off to see the improvement.
 
Rolando
 
 

-----Original Message-----
From: 'Ray Gralak (Groups)' groups3@... [ap-gto]
To: ap-gto
Sent: Sat, Aug 20, 2016 10:26 am
Subject: RE: [ap-gto] Re: PEC

Hi Larry,

I think I meant that considering nothing changes (like maybe in a permanent setup). More accurately, you will usually need to do the calibration wizard once per night. However, if you change equipment or camera orientation then you will need to calibrate again. If you do a pier flip, you don't necessarily need to calibrate, but you may have to invert the PEC curve.

-Ray Gralak
Author of APCC (Astro-Physics Command Center): http://www.astro-physics.com/index.htm?products/accessories/software/apcc/apcc
Author of PEMPro: http://www.ccdware.com
Author of Astro-Physics V2 ASCOM Driver: http://www.gralak.com/apdriver
Author of PulseGuide: http://www.pulseguide.com
Author of Sigma: http://www.gralak.com/sigma


> -----Original Message-----
> From: ap-gto@... [mailto:ap-gto@...]
> Sent: Saturday, August 20, 2016 8:08 AM
> To: ap-gto@...
> Subject: RE: [ap-gto] Re: PEC
>
>
>
> Ray, excuse me for butting into this conversation. But the reference you made about
> the Calibration Wizard says you only need to do this once. Is this also true if I
> remove the telescope/camera and later replace it on the mount (a refractor) and the
> camera angle is slightly off from its previous position?
>
> Larry
>
>



------------------------------------
Posted by: "Ray Gralak \(Groups\)" <groups3@...>
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Re: PEC

Joe Zeglinski
 

Ray,
 
    To your point about calibration after a pier flip. I was thinking it would be better to run calibration, but also just SKIP ahead to the step that the user selects the “hockey stick” pattern, and changes it “diagonally” to the previous pier side’s calibration run, selected one.
 
    That way, the camera is not touched or adjusted, which would change the camera angle from the original pier side calibration. I have found the scale changes “somewhat”, if I go through ALL the calibration steps,  on the flip side. It may account for my getting  different PEC curve coefficients on alternate pier sides.
 
Joe


Re: PEC

Ray Gralak
 

Hi Larry,

I think I meant that considering nothing changes (like maybe in a permanent setup). More accurately, you will usually need to do the calibration wizard once per night. However, if you change equipment or camera orientation then you will need to calibrate again. If you do a pier flip, you don't necessarily need to calibrate, but you may have to invert the PEC curve.

-Ray Gralak
Author of APCC (Astro-Physics Command Center): http://www.astro-physics.com/index.htm?products/accessories/software/apcc/apcc
Author of PEMPro: http://www.ccdware.com
Author of Astro-Physics V2 ASCOM Driver: http://www.gralak.com/apdriver
Author of PulseGuide: http://www.pulseguide.com
Author of Sigma: http://www.gralak.com/sigma

-----Original Message-----
From: ap-gto@yahoogroups.com [mailto:ap-gto@yahoogroups.com]
Sent: Saturday, August 20, 2016 8:08 AM
To: ap-gto@yahoogroups.com
Subject: RE: [ap-gto] Re: PEC



Ray, excuse me for butting into this conversation. But the reference you made about
the Calibration Wizard says you only need to do this once. Is this also true if I
remove the telescope/camera and later replace it on the mount (a refractor) and the
camera angle is slightly off from its previous position?

Larry


Re: PEC

Larry Phillips
 

Ray, excuse me for butting into this conversation.  But the reference you made about the Calibration Wizard says you only need to do this once.  Is this also true if I remove the telescope/camera and later replace it on the mount (a refractor) and the camera angle is slightly off from its previous position?

Larry


Re: PEC

Ray Gralak
 

Hi Vince,

Thanks! I got your files.

I think I see at least one problem: image scale is set to "1" (exactly), and the camera angle is "0.0000". Those are the defaults, which indicates to me that you did not run the Calibration Wizard first. That will establish camera angle and image scale, which are crucial to getting a good result.

Please take a look at the Astro-Physics GTOCP3 section in the help file. This section applies to the GTOCP4 as well. An easy way to get to the help file is by pressing the F1 key when PEMPro is running. Or, you can find the same information here online:

http://www.siriusimaging.com/Help/PEMProV2new/index.html?astrophysicsgtocp3.html

-Ray Gralak
Author of APCC (Astro-Physics Command Center): http://www.astro-physics.com/index.htm?products/accessories/software/apcc/apcc
Author of PEMPro: http://www.ccdware.com
Author of Astro-Physics V2 ASCOM Driver: http://www.gralak.com/apdriver
Author of PulseGuide: http://www.pulseguide.com
Author of Sigma: http://www.gralak.com/sigma

-----Original Message-----
From: ap-gto@yahoogroups.com [mailto:ap-gto@yahoogroups.com]
Sent: Saturday, August 20, 2016 6:34 AM
To: ap-gto@yahoogroups.com
Subject: RE: [ap-gto] Re: PEC



Hi Ray,
Many thanks for your help. Files are on their way.
Vince



Re: PEC

Vince Salfranc
 

Hi Ray,
Many thanks for your help. Files are on their way.
Vince


Re: PEC

Ray Gralak
 

Hi Vince,

Can you zip all the files from your last session and email the zip file to me (groups3 AT gralak dot com), or post them in the files section?

Thanks,

-Ray Gralak
Author of APCC (Astro-Physics Command Center): http://www.astro-physics.com/index.htm?products/accessories/software/apcc/apcc
Author of PEMPro: http://www.ccdware.com
Author of Astro-Physics V2 ASCOM Driver: http://www.gralak.com/apdriver
Author of PulseGuide: http://www.pulseguide.com
Author of Sigma: http://www.gralak.com/sigma

-----Original Message-----
From: ap-gto@yahoogroups.com [mailto:ap-gto@yahoogroups.com]
Sent: Saturday, August 20, 2016 2:57 AM
To: ap-gto@yahoogroups.com
Subject: [ap-gto] Re: PEC



Thank you for all the advise. I seem to have done all of this and somehow there is no
improvement.
I am using Pempro as described here, created the curse and then send it to the
mount. Then I done a new acquire data with the pem on and there is no
improvement.
I have also tried to reverse the curve but still no luck.
Thank you for your help.
Vince



Re: PEC

Vince Salfranc
 

Thank you for all the advise. I seem to have done all of this and somehow there is no improvement.
I am using Pempro as described here, created the curse and then send it to the mount. Then I done a new acquire data with the pem on and there is no improvement.
I have also tried to reverse the curve but still no luck.
Thank you for your help.
Vince


Re: AP 900GTO Mount won't connect

Jeff Kraehnke
 

Hi Ray,

I confirmed that APCC Virtual port is unchecked.  As I was connected to the scope using the older driver, the PC froze and MaximDL 6 crashed.  When I tried to reconnect afterwards, I got another error and couldn't connect to the telescope no matter what.  I'm thinking this is a Windows thing.  

I also tried to connect using the AP Jog utility and did not succeed.

Not sure what else to do so I'm using a completely different PC with a fresh and legit version of WIN7 Home Premium that has all Windows updates.  I will install all ASCOM and such software and try again.  I can't imagine my issue is hardware related.

The other thing I was chasing prior to this connection issue was a random overcommanded DEC during autoguiding that ruined my images and if not that, oscillation.  The oscillation could be controlled thru reducing aggression but I wonder if all my problems aren't related to a corrupt .NET framework.  If I make any progress, I'll respond later.  Thanks.

Kranky


Re: Videos for APCC v1.5

Jack Huerkamp
 

Cal,

 

Thanks for the tip.

 

Yours truly,

 

Jack

 

Jack Huerkamp

Jack's Astro Accessories, LLC.

38388 Pine Streeet

Pearl River, LA 70452

985-863-2165 (Home)

985-445-5063 (Mobile)

mallincamusa@...

www.mallincamusa.com

 

 

 

From: ap-gto@... [mailto:ap-gto@...]
Sent: Friday, August 19, 2016 6:06 PM
To: ap-gto@...
Subject: RE: [ap-gto] Videos for APCC v1.5

 

 

Jack,

A quick and dirty but kludgy workaround to zoom the screen in and out is to press the Ctrl key while scrolling the mouse wheel. This may help you enlarge the video until there is a proper fix.

Cal


Re: Videos for APCC v1.5

Jack Huerkamp
 

Marj,

 

I have no problem observing other YouTube videos full screen, so it is not a browser restriction.  But when I click on the YouTube link in the APCC videos I am able to see them in full screen.

 

Yours truly,

 

Jack

 

From: ap-gto@... [mailto:ap-gto@...]
Sent: Friday, August 19, 2016 6:17 PM
To: ap-gto@...
Subject: RE: [ap-gto] Videos for APCC v1.5

 

 

Hi Jack,

 

There are some tips at the top of our video webpage that will allow you to view full screen. I will copy them here for your convenience:

Tips

The video links are set up to allow full screen viewing. You may be unable to do so due to browser settings. As an alternative, click the YouTube icon in the lower right corner to take you to the YouTube website.

 

To increase the quality of the video, click the Settings icon to the left of the YouTube icon. And adjust the slider. The default setting is low.

 

 

Video webpage link for public beta version:

http://www.astro-physics.com/tech_support/apcc/apcc-videos.htm

 

Clear Skies,

 

Marj Christen

Astro-Physics, Inc

11250 Forest Hills Rd

Machesney Park, IL 61115

Phone: 815-282-1513

Fax: 815-282-9847

www.astro-physics.com

 

From: ap-gto@... [mailto:ap-gto@...]
Sent: Friday, August 19, 2016 5:50 PM
To: ap-gto@...
Subject: RE: [ap-gto] Videos for APCC v1.5

 

 

Marj,

 

Thanks.

 

Jack

 

Jack Huerkamp

Jack's Astro Accessories, LLC.

38388 Pine Streeet

Pearl River, LA 70452

985-863-2165 (Home)

985-445-5063 (Mobile)

mallincamusa@...

www.mallincamusa.com

 

 

 

From: ap-gto@... [mailto:ap-gto@...]
Sent: Friday, August 19, 2016 4:27 PM
To: ap-gto@...
Subject: RE: [ap-gto] Videos for APCC v1.5

 

 

Jack,

I will check into it.

 

Clear Skies,

 

Marj Christen

Astro-Physics, Inc

11250 Forest Hills Rd

Machesney Park, IL 61115

Phone: 815-282-1513

Fax: 815-282-9847

www.astro-physics.com

 

From: ap-gto@... [mailto:ap-gto@...]
Sent: Friday, August 19, 2016 3:09 PM
To: ap-gto@...
Subject: RE: [ap-gto] Videos for APCC v1.5

 

 

Marj,

 

I was trying to view the videos on my observatory PC while setting up APCC, but Full Screen was not available.  Thus the videos were small and it was almost impossible to see what was being checked andchanged.  I tried several different browsers - same results.

 

Am I doing something wrong, or has full screen been disabled for these videos?

 

 

Jack Huerkamp

Jack's Astro Accessories, LLC.

38388 Pine Streeet

Pearl River, LA 70452

985-863-2165 (Home)

985-445-5063 (Mobile)

mallincamusa@...

www.mallincamusa.com

 

 

 

From: ap-gto@... [mailto:ap-gto@...]
Sent: Sunday, July 24, 2016 6:08 PM
To: ap-gto@...
Subject: [ap-gto] Videos for APCC v1.5

 

 

Hi all,

 

Ray prepared a new video that deals with Setting Up Connections. Check it out at this link:

http://www.astro-physics.com/tech_support/apcc/apcc-videos.htm

 

We’ve also included the Horizons video. Although the first portion is slightly outdated, it is still quite useful.

 

 

 

Clear Skies,

 

Marj Christen

Astro-Physics, Inc

11250 Forest Hills Rd

Machesney Park, IL 61115

Phone: 815-282-1513

Fax: 815-282-9847

www.astro-physics.com

 


Re: Videos for APCC v1.5

Jack Huerkamp
 

Marj,

 

Thanks

 

Jack

 

From: ap-gto@... [mailto:ap-gto@...]
Sent: Friday, August 19, 2016 6:17 PM
To: ap-gto@...
Subject: RE: [ap-gto] Videos for APCC v1.5

 

 

Hi Jack,

 

There are some tips at the top of our video webpage that will allow you to view full screen. I will copy them here for your convenience:

Tips

The video links are set up to allow full screen viewing. You may be unable to do so due to browser settings. As an alternative, click the YouTube icon in the lower right corner to take you to the YouTube website.

 

To increase the quality of the video, click the Settings icon to the left of the YouTube icon. And adjust the slider. The default setting is low.

 

 

Video webpage link for public beta version:

http://www.astro-physics.com/tech_support/apcc/apcc-videos.htm

 

Clear Skies,

 

Marj Christen

Astro-Physics, Inc

11250 Forest Hills Rd

Machesney Park, IL 61115

Phone: 815-282-1513

Fax: 815-282-9847

www.astro-physics.com

 

From: ap-gto@... [mailto:ap-gto@...]
Sent: Friday, August 19, 2016 5:50 PM
To: ap-gto@...
Subject: RE: [ap-gto] Videos for APCC v1.5

 

 

Marj,

 

Thanks.

 

Jack

 

Jack Huerkamp

Jack's Astro Accessories, LLC.

38388 Pine Streeet

Pearl River, LA 70452

985-863-2165 (Home)

985-445-5063 (Mobile)

mallincamusa@...

www.mallincamusa.com

 

 

 

From: ap-gto@... [mailto:ap-gto@...]
Sent: Friday, August 19, 2016 4:27 PM
To: ap-gto@...
Subject: RE: [ap-gto] Videos for APCC v1.5

 

 

Jack,

I will check into it.

 

Clear Skies,

 

Marj Christen

Astro-Physics, Inc

11250 Forest Hills Rd

Machesney Park, IL 61115

Phone: 815-282-1513

Fax: 815-282-9847

www.astro-physics.com

 

From: ap-gto@... [mailto:ap-gto@...]
Sent: Friday, August 19, 2016 3:09 PM
To: ap-gto@...
Subject: RE: [ap-gto] Videos for APCC v1.5

 

 

Marj,

 

I was trying to view the videos on my observatory PC while setting up APCC, but Full Screen was not available.  Thus the videos were small and it was almost impossible to see what was being checked andchanged.  I tried several different browsers - same results.

 

Am I doing something wrong, or has full screen been disabled for these videos?

 

 

Jack Huerkamp

Jack's Astro Accessories, LLC.

38388 Pine Streeet

Pearl River, LA 70452

985-863-2165 (Home)

985-445-5063 (Mobile)

mallincamusa@...

www.mallincamusa.com

 

 

 

From: ap-gto@... [mailto:ap-gto@...]
Sent: Sunday, July 24, 2016 6:08 PM
To: ap-gto@...
Subject: [ap-gto] Videos for APCC v1.5

 

 

Hi all,

 

Ray prepared a new video that deals with Setting Up Connections. Check it out at this link:

http://www.astro-physics.com/tech_support/apcc/apcc-videos.htm

 

We’ve also included the Horizons video. Although the first portion is slightly outdated, it is still quite useful.

 

 

 

Clear Skies,

 

Marj Christen

Astro-Physics, Inc

11250 Forest Hills Rd

Machesney Park, IL 61115

Phone: 815-282-1513

Fax: 815-282-9847

www.astro-physics.com

 


Re: Videos for APCC v1.5

 

Hi Jack,

 

There are some tips at the top of our video webpage that will allow you to view full screen. I will copy them here for your convenience:

Tips

The video links are set up to allow full screen viewing. You may be unable to do so due to browser settings. As an alternative, click the YouTube icon in the lower right corner to take you to the YouTube website.

 

To increase the quality of the video, click the Settings icon to the left of the YouTube icon. And adjust the slider. The default setting is low.

 

 

Video webpage link for public beta version:

http://www.astro-physics.com/tech_support/apcc/apcc-videos.htm

 

Clear Skies,

 

Marj Christen

Astro-Physics, Inc

11250 Forest Hills Rd

Machesney Park, IL 61115

Phone: 815-282-1513

Fax: 815-282-9847

www.astro-physics.com

 

From: ap-gto@... [mailto:ap-gto@...]
Sent: Friday, August 19, 2016 5:50 PM
To: ap-gto@...
Subject: RE: [ap-gto] Videos for APCC v1.5

 

 

Marj,

 

Thanks.

 

Jack

 

Jack Huerkamp

Jack's Astro Accessories, LLC.

38388 Pine Streeet

Pearl River, LA 70452

985-863-2165 (Home)

985-445-5063 (Mobile)

mallincamusa@...

www.mallincamusa.com

 

 

 

From: ap-gto@... [mailto:ap-gto@...]
Sent: Friday, August 19, 2016 4:27 PM
To: ap-gto@...
Subject: RE: [ap-gto] Videos for APCC v1.5

 

 

Jack,

I will check into it.

 

Clear Skies,

 

Marj Christen

Astro-Physics, Inc

11250 Forest Hills Rd

Machesney Park, IL 61115

Phone: 815-282-1513

Fax: 815-282-9847

www.astro-physics.com

 

From: ap-gto@... [mailto:ap-gto@...]
Sent: Friday, August 19, 2016 3:09 PM
To: ap-gto@...
Subject: RE: [ap-gto] Videos for APCC v1.5

 

 

Marj,

 

I was trying to view the videos on my observatory PC while setting up APCC, but Full Screen was not available.  Thus the videos were small and it was almost impossible to see what was being checked andchanged.  I tried several different browsers - same results.

 

Am I doing something wrong, or has full screen been disabled for these videos?

 

 

Jack Huerkamp

Jack's Astro Accessories, LLC.

38388 Pine Streeet

Pearl River, LA 70452

985-863-2165 (Home)

985-445-5063 (Mobile)

mallincamusa@...

www.mallincamusa.com

 

 

 

From: ap-gto@... [mailto:ap-gto@...]
Sent: Sunday, July 24, 2016 6:08 PM
To: ap-gto@...
Subject: [ap-gto] Videos for APCC v1.5

 

 

Hi all,

 

Ray prepared a new video that deals with Setting Up Connections. Check it out at this link:

http://www.astro-physics.com/tech_support/apcc/apcc-videos.htm

 

We’ve also included the Horizons video. Although the first portion is slightly outdated, it is still quite useful.

 

 

 

Clear Skies,

 

Marj Christen

Astro-Physics, Inc

11250 Forest Hills Rd

Machesney Park, IL 61115

Phone: 815-282-1513

Fax: 815-282-9847

www.astro-physics.com

 


Re: Videos for APCC v1.5

Cal Sandfort
 

Jack,

A quick and dirty but kludgy workaround to zoom the screen in and out is to press the Ctrl key while scrolling the mouse wheel. This may help you enlarge the video until there is a proper fix.

Cal


Re: Videos for APCC v1.5

Jack Huerkamp
 

Marj,

 

Thanks.

 

Jack

 

Jack Huerkamp

Jack's Astro Accessories, LLC.

38388 Pine Streeet

Pearl River, LA 70452

985-863-2165 (Home)

985-445-5063 (Mobile)

mallincamusa@...

www.mallincamusa.com

 

 

 

From: ap-gto@... [mailto:ap-gto@...]
Sent: Friday, August 19, 2016 4:27 PM
To: ap-gto@...
Subject: RE: [ap-gto] Videos for APCC v1.5

 

 

Jack,

I will check into it.

 

Clear Skies,

 

Marj Christen

Astro-Physics, Inc

11250 Forest Hills Rd

Machesney Park, IL 61115

Phone: 815-282-1513

Fax: 815-282-9847

www.astro-physics.com

 

From: ap-gto@... [mailto:ap-gto@...]
Sent: Friday, August 19, 2016 3:09 PM
To: ap-gto@...
Subject: RE: [ap-gto] Videos for APCC v1.5

 

 

Marj,

 

I was trying to view the videos on my observatory PC while setting up APCC, but Full Screen was not available.  Thus the videos were small and it was almost impossible to see what was being checked andchanged.  I tried several different browsers - same results.

 

Am I doing something wrong, or has full screen been disabled for these videos?

 

 

Jack Huerkamp

Jack's Astro Accessories, LLC.

38388 Pine Streeet

Pearl River, LA 70452

985-863-2165 (Home)

985-445-5063 (Mobile)

mallincamusa@...

www.mallincamusa.com

 

 

 

From: ap-gto@... [mailto:ap-gto@...]
Sent: Sunday, July 24, 2016 6:08 PM
To: ap-gto@...
Subject: [ap-gto] Videos for APCC v1.5

 

 

Hi all,

 

Ray prepared a new video that deals with Setting Up Connections. Check it out at this link:

http://www.astro-physics.com/tech_support/apcc/apcc-videos.htm

 

We’ve also included the Horizons video. Although the first portion is slightly outdated, it is still quite useful.

 

 

 

Clear Skies,

 

Marj Christen

Astro-Physics, Inc

11250 Forest Hills Rd

Machesney Park, IL 61115

Phone: 815-282-1513

Fax: 815-282-9847

www.astro-physics.com

 


Re: Videos for APCC v1.5

 

Jack,

I will check into it.

 

Clear Skies,

 

Marj Christen

Astro-Physics, Inc

11250 Forest Hills Rd

Machesney Park, IL 61115

Phone: 815-282-1513

Fax: 815-282-9847

www.astro-physics.com

 

From: ap-gto@... [mailto:ap-gto@...]
Sent: Friday, August 19, 2016 3:09 PM
To: ap-gto@...
Subject: RE: [ap-gto] Videos for APCC v1.5

 

 

Marj,

 

I was trying to view the videos on my observatory PC while setting up APCC, but Full Screen was not available.  Thus the videos were small and it was almost impossible to see what was being checked andchanged.  I tried several different browsers - same results.

 

Am I doing something wrong, or has full screen been disabled for these videos?

 

 

Jack Huerkamp

Jack's Astro Accessories, LLC.

38388 Pine Streeet

Pearl River, LA 70452

985-863-2165 (Home)

985-445-5063 (Mobile)

mallincamusa@...

www.mallincamusa.com

 

 

 

From: ap-gto@... [mailto:ap-gto@...]
Sent: Sunday, July 24, 2016 6:08 PM
To: ap-gto@...
Subject: [ap-gto] Videos for APCC v1.5

 

 

Hi all,

 

Ray prepared a new video that deals with Setting Up Connections. Check it out at this link:

http://www.astro-physics.com/tech_support/apcc/apcc-videos.htm

 

We’ve also included the Horizons video. Although the first portion is slightly outdated, it is still quite useful.

 

 

 

Clear Skies,

 

Marj Christen

Astro-Physics, Inc

11250 Forest Hills Rd

Machesney Park, IL 61115

Phone: 815-282-1513

Fax: 815-282-9847

www.astro-physics.com

 


Re: Videos for APCC v1.5

Jack Huerkamp
 

Marj,

 

I was trying to view the videos on my observatory PC while setting up APCC, but Full Screen was not available.  Thus the videos were small and it was almost impossible to see what was being checked andchanged.  I tried several different browsers - same results.

 

Am I doing something wrong, or has full screen been disabled for these videos?

 

 

Jack Huerkamp

Jack's Astro Accessories, LLC.

38388 Pine Streeet

Pearl River, LA 70452

985-863-2165 (Home)

985-445-5063 (Mobile)

mallincamusa@...

www.mallincamusa.com

 

 

 

From: ap-gto@... [mailto:ap-gto@...]
Sent: Sunday, July 24, 2016 6:08 PM
To: ap-gto@...
Subject: [ap-gto] Videos for APCC v1.5

 

 

Hi all,

 

Ray prepared a new video that deals with Setting Up Connections. Check it out at this link:

http://www.astro-physics.com/tech_support/apcc/apcc-videos.htm

 

We’ve also included the Horizons video. Although the first portion is slightly outdated, it is still quite useful.

 

 

 

Clear Skies,

 

Marj Christen

Astro-Physics, Inc

11250 Forest Hills Rd

Machesney Park, IL 61115

Phone: 815-282-1513

Fax: 815-282-9847

www.astro-physics.com

 


Re: PEC

Christopher Erickson
 

Here is what I do to generate a new PEMPro PEC curve for an AP mount. It is
possible that the "perfectly-correct" way is a bit different but this has
worked for me:


1. Download the latest beta version of PEMPro V3 Beta.

2. Under PEC/Setup tab - "Configure Scopes/Mounts".

3. Now configure "Connect Camera".

4. Do a reasonably-good polar alignment. No need to get too fanatical or
spend too much time trying to do a drift alignment or using the Polar Align
Wizard.

5. When the mount and camera are configured correctly and working, run the
"Wizards/Calibration Wizard" This will allow you to get the true image
scale of your optical setup and camera. It is rarely exactly what the
theoretical calculation says it will be so a real-world measurement is
critical to getting a good, valid PEC curve. My AP 130EDF-GT refractor with
flattener and SBIG STF-8300M camera has a theoretical image scale of 1.32
arcseconds per pixel. The Calibration Wizard showed that it was really
1.285. Probably the flattener was primarily responsible for that
difference. At any rate that is enough difference to have created a poor
PEC curve.

6. Next step is to "Acquire Data". Make sure PEC is turned off at this
step. I try to pick a clear, stable night. However less-stable nights are
useable if you do a lot of "worm turns" (I do about an hour's-worth per run)
and let the software automatically integrate them.

7. When done with "Acquire Data", the software will step you through to
"Program Mount". On very turbulent nights I might spend some time
"smoothing" the data under the "AP Raw PE" tab with a scale value of 1.25 or
so. Running more worm turns would probably be a better approach, but
sometimes I am a bit lazy and impatient.

8. Done!

Now you can run another curve with PEC turned on and see how it compares.

There is a lot of advanced stuff you can do and get real mathematical but
these basics have worked sufficiently for me.

I hope this helps.


Christopher Erickson
Consulting Engineer
Summit Kinetics
Waikoloa, HI 96738
www.summitkinetics.com




________________________________

From: Christopher Erickson [mailto:christopher.k.erickson@gmail.com]
Sent: Friday, August 19, 2016 7:17 AM
To: 'ap-gto@yahoogroups.com'
Subject: RE: [ap-gto] PEC


Did you run the calibration wizard to find out your true image scale before
acquiring data?

My true image scale was a full 5% different than the
mathematically-calculated value for my OTA+flattener+camera.


Christopher Erickson
Consulting Engineer
Summit Kinetics
Waikoloa, HI 96738
www.summitkinetics.com



________________________________

From: ap-gto@yahoogroups.com [mailto:ap-gto@yahoogroups.com]
Sent: Friday, August 19, 2016 1:53 AM
To: ap-gto@yahoogroups.com
Subject: [ap-gto] PEC





I am trying to program the PEM on my AP900 without any success.

Could someone be kind enough to help me.

1.Do I need to point the mount to a particular part of the sky before doing
the data capture to create the correction curve.

2.which option should I use to create the curve.

3.I have tried to create a curve and sent it to the mount but the guiding is
no better even worse.

4. I have inverted the curve but still no improvement.

5.I can get a 5 minute exposure with no trailing when I an not autoguiding.

Thank you for your help.

Vince